Not sure where you get the 1000 lines from. That's ridiculous. `cloc` counts 16k lines of Kotlin for the Android app and 22k lines of Swift for the iOS app. That does not even include other aspects like the server side code or support documentation. Also it's not only the app that had to be build: It required all the notification infrastructure and coordination to deliver test result to the app. This is really one of the very few big government projects where I can't really complain about the costs. There was only one attempt at getting this done right and in time. They managed both.